– The approximate date you saw it:

2000-present

– Actors you might have recognized:

Maybe Stellan Skarsgård or Noomi Rapace?

– Whether it was in English or another language:

English

– Whether you saw it on TV (it might be a TV episode rather than a movie):

Netflix or HBO Go

– Whether it was in color or black and white:

Color

– Anything else you can think of that might help pinpoint the film:

Post-apocalyptic story in which the characters overcome some journey (or get abducted) by a commune (or cult) and then realize that the cult is periodically choosing at random a single person to be sacrificed and eaten so that the others can survive? An older woman sacrifices herself so that a younger character doesn’t have to die?